A new ultrasonic instrumentation system was developed and applied to the problem of detecting critical heat flux (CHF) in experiments that simulate a nuclear reactor fuel assembly. This instrumentation system used the principles of ultrasonic thermometry to detect and locate CHF in a tube bundle with non-uniform axial heat generation. The technique consists of measuring the time between pairs of ultrasonic echoes that reflect from a sequence of evenly spaced discontinuities along a sensor. Each measurement of time is directly related to the temperature of a specific segment of a sensor. The system was designed to handle many 16-zone sensors at a high rate of data acquisition so that CHF could be rapidly detected and accurately located. This paper includes a description of the sensor and the signal processing techniques as well as examples of the system’s response to CHF.
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Ultrasonic Temperature Profiling System for Detecting Critical Heat Flux in Non-Uniformly Heated Tube Bundles
A. R. Barber,
A. R. Barber
Babcock and Wilcox Co., Research and Development Division, Alliance, OH
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K. E. Kneidel,
K. E. Kneidel
Babcock and Wilcox Co., Research and Development Division, Alliance, OH
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C. S. Fitzgerald,
C. S. Fitzgerald
Babcock and Wilcox Co., Research and Development Division, Lynchburg, VA
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L. C. Lynnworth
L. C. Lynnworth
Head of Ultrasonics Department, Parametrics, Inc., Waltham, MA
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A. R. Barber
Babcock and Wilcox Co., Research and Development Division, Alliance, OH
K. E. Kneidel
Babcock and Wilcox Co., Research and Development Division, Alliance, OH
C. S. Fitzgerald
Babcock and Wilcox Co., Research and Development Division, Lynchburg, VA
L. C. Lynnworth
Head of Ultrasonics Department, Parametrics, Inc., Waltham, MA
J. Heat Transfer. Nov 1979, 101(4): 622-627 (6 pages)
Published Online: November 1, 1979
Article history
Received:
February 5, 1979
Online:
August 11, 2010
Citation
Barber, A. R., Kneidel, K. E., Fitzgerald, C. S., and Lynnworth, L. C. (November 1, 1979). "Ultrasonic Temperature Profiling System for Detecting Critical Heat Flux in Non-Uniformly Heated Tube Bundles." ASME. J. Heat Transfer. November 1979; 101(4): 622–627. https://doi.org/10.1115/1.3451047
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